Allied Expeller Industries offers Gears for De-airing Pugmill. Allied Expeller Industries offers various types of oil expeller machinery and its spare parts. The Gears for De-airing Pugmill has the advantage and smoothness of a single helical gear. This machine had greater strength in the contact of the teeth and no side ways force and less wear and tear. The Gears for De-airing Pugmill are made of special alloy steel grades that are available in various sizes and quality.